Lamp-socket for incandescent electric lamps.



N0. 69|,563. u Patented lan.- 2|, |902.

A. MGKENZIE. LAMP SUGKET FOR INCANDESCENT ELECTRIG'LAMFS.

(Applicafion led Apr. 29. 1901.)

(N0 Model.)

@immuun i li il;

. liifllllnm UNITED STATES PATENT' OFFICE.

ANDREW MCKENZIE, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR OF TWO- THIRDS TO JOSEPH M. MANN AND ELLIS C. BEUZARD, JR., OF PROVI- DENOE, RHODE ISLAND.

LAMP-SOCKET FIOR INCANDES'CENT ELECTRIC LAMPS.A

SPECIFICATION forming part of Letters Patent No. 691,563, dated January 21, 1902.

Application led April 29, 1901. Serial No. 58,029. (No model.)

To all whom. t mag/concern:

Be it known that I, ANDREW MCKENZIE, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Lamp-Sockets for Incandescent Electric Lamps; and I do declare the following to be a full, clear, and ex act description of the invention, such as will ro enable others skilled in the art to which it appertains to make andV use the same.

The invention relates to lamp-sockets for incandescent electric lamps.

The object of the invention is to provide a r 5 lamp-socket which shall be simple of construction, durable in use, comparatively inexpensive of manufacture, and by means of which the lamps may be expeditiously connected to and disconnected from the socket.

With this and other objects in View the invention consists in certain novel features of construction, combination, and arrangement of parts, which will be hereinafter more fully set forth, and particularly pointed out in the appended claim. y

Referring to the accompanying drawings, Figure l is a side elevation of an incandescent electriclamp, illustrating the application of my invention. Fig. 2 is a vertical sectional 3o View through a portion of the lamp-socket and a portion of the base of the bulb, showing the two connected together by the spring-detent. Fig. 3 is a side elevation of the base of the bulb, and Fig. 4 is a detail perspective View of the spring-detent.. y

In the drawings, l denotes the bulb of the lamp, 2 its base, and 3 the socket. The base instead of being screw-threaded has a smooth periphery and is formed near its upper end 4o with a horizontally disposed slot 5. The socket is slit to form the spring-detent 6, hav` ing an inwardly-pr0jecting toe 7, one end of which is beveled, as shown at S. This toe is adapted to swing into the slot 5 of theA base when said base is inserted into the socket and hold the bulb in place. To disengage the base from the socket, the bulb is turned in the direction of the arrow, which engages the end wall 5 of the slot with the beveled end of the toe and allows the slot to ride from engagement with the toe with aslight click and permit of the withdrawal of the base from the socket. A movement in the opposite direction when the parts areassembled is limited bya stud a, projecting laterally from the base, coming in contact with the end wall a' of a recess a2, formed in the lower edge of the socket, thus relieving the spring-detent of undue strain and preventing it from being broken, which would be very apt to be the result should a personI unfamiliar with this form of socket attempt to remove the lamp by turning it in the wrong direction. The stud a and the recess 0.2 also serve as a guide to the eye in inserting the base within the socket, inasmuch as when the stud et is vertically alined with the recess a2 the slot is also alined with the toe of the spring-detent.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of the invention will be readily understood without requiring an extended explanation. The device is exceedingly useful lfor the purpose for which it is designed and may be placed upon the market at a comparatively small cost.

Various changes in the form, proportion, and the minor details of construction maybe resorted to Without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described inyinvention, what I claim as new, and desire to secure by Letters Patent, is-

In a lamp of the character described, the combination of the lamp-socket and a lampbase, the one provided with a springdetent having a toe and the other with a slot to receive said toe and lock the base to the socket, and the one provided With a recess and the other with a coacting stud adapted to be brought into engagement with one of the end walls of the recess when the base is turned in my hand in presence of lnwo subscribing Witnesses.

described.

In testimony whereof I have hereunto seb ANDREV MCKENZIE.

EDWARD F. CURTIS,

W. MCKENZIE. 

